Groundwater Conservation Districts were established to Manage and Protect groundwater. Authorized by the Texas Legislature, these local entities concentrate efforts on collecting data, educating the public about water conservation, and protecting these delicate and valuable resources.
The map to the left shows the major aquifer systems in Texas. Guadalupe County sits over the Carrizo-Wilcox.
To read more about what a groundwater district does and learn about the differences between groundwater and surface water, click on the
Groundwater Conservation District overview file.
Read the Texas Water Code Chapter 36 to learn how groundwater conservation districts were formed.
The Carrizo-Wilcox Aquifer encompasses 66 counties.
The material composing the aquifer is predominantly fine to course grain sands with interbedded gravel, silt, and clay. The water
is generally considered fresh to slightly saline. Guadalupe County is located in the southern portion of the Carrizo-Wilcox Aquifer.
A Groundwater Availability Model (GAM) for each portion of the aquifer is published by the Texas Water Development Board.
Texas is divided into 16 Regions of which Guadalupe County falls into Region L - South Central Texas
Read the Region L 2011 Water Plan
2016 Approved Regional
GCGCD is in Groundwater Management Area (GMA) 13
Summary of Desired Future Conditions for GMA 13
Summary of Modeled Available Groundwater for GMA 13
Groundwater Management Areas were created "in order to provide for the conservation, preservation, protection,
recharging, and prevention of waste of the groundwater, and of groundwater reservoirs or their subdivisions, and
to control subsidence caused by withdrawal of water from those groundwater reservoirs or their subdivisions,
consistent with the objectives of Section 59, Article XVI, Texas Constitution, groundwater management areas may
be created..." (Texas Water Code §35.001)